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Table 5 LDL tests performed and LDL test results available by lipid lowering treatment in patients initiating lipid-lowering therapy, including patient subgroups with diabetes (DM) or rheumatoid arthritis (RA)

From: Supplementing claims data with outpatient laboratory test results to improve confounding adjustment in effectiveness studies of lipid-lowering treatments

  

All patients

LDL test performed

LDL test results available

LDL level

HDL level

 

Initiated medication

N

%

N

%

N

% of total N

% of ordered

mean

s.d.

mean

s.d.

All

Any statin alone

655,211

93

395,496

60.4

165,380

25.2

41.8

145.3

38.6

50.2

14.5

 

Any statin high intensity*

173,979

25

98,309

56.5

41,320

23.7

42.0

144.2

45.5

49.2

14.3

 

Any statin low intensity

481,232

68

297,187

61.8

124,060

25.8

41.7

145.7

36

50.6

14.6

 

Simvastatin alone

282,658

40

176,697

62.5

73,193

25.9

41.4

147.0

36.3

50.2

14.4

 

Simvastatin high dose (>40 mg)

11,354

2

5,912

52.1

2,192

19.3

37.1

135.6

49.5

48

13.6

 

Simvastatin low dose

271,304

39

170,785

62.9

71,001

26.2

41.6

147.3

35.8

50.2

14.4

 

Vytorin alone

24,931

4

12,966

52

6,820

27.4

52.6

142.2

47.6

49.6

14.3

 

Vytorin high dose (>40 mg simvast)

1,069

0

563

52.7

223

20.9

39.6

124.1

56.7

48.1

13.5

 

Vytorin low dose

23,862

3

12,403

52

6,597

27.6

53.2

142.8

47.1

49.6

14.4

 

Ezetimibe alone

20,509

3

11,412

55.6

5,334

26

46.7

143.2

38.1

51.5

14.9

 

Ezetimibe + statin

2,833

0

1,834

64.7

720

25.4

39.3

145.7

47.7

48.2

13.5

 

Total:

703,484

          

DM

Any statin alone

103,664

93

69,788

67.3

25,927

25

37.2

124.8

37.4

46.5

13.1

 

Any statin high intensity*

28,472

26

18,069

63.5

6,909

24.3

38.2

122.3

43.3

45.8

13.1

 

Any statin low intensity

75,192

67

51,719

68.8

19,018

25.3

36.8

125.7

35.0

46.8

13.1

 

Simvastatin alone

46,414

42

32,207

69.4

11,670

25.1

36.2

126.8

35.6

46.5

13.0

 

Simvastatin high dose (>40 mg)

2,498

2

1,513

60.6

521

20.9

34.4

117.1

46.2

45.6

12.6

 

Simvastatin low dose

43,916

39

30,694

69.9

11,149

25.4

36.3

127.2

35.0

46.6

13.0

 

Vytorin alone

4,049

4

2,324

57.4

1,086

26.8

46.7

122.9

44.4

45.6

13.4

 

Vytorin high dose (>40 mg simvast)

269

0

169

62.8

58

21.6

34.3

105.6

41.6

46.3

14.0

 

Vytorin low dose

3,780

3

2,155

57

1,028

27.2

47.7

123.8

44.4

45.6

13.4

 

Ezetimibe alone

3,459

3

2,092

60.5

884

25.6

42.3

126.9

37.7

47.0

13.1

 

Ezetimibe + statin

512

1

372

72.7

135

26.4

36.3

133.1

44.5

44.8

11.8

 

Total:

111,684

          

RA

Any statin alone

4,118

91

2,425

58.9

833

20.2

34.4

138.5

39.4

54.7

16.5

 

Any statin high intensity*

1,044

23

575

55.1

205

19.6

35.7

135.4

50.9

53.6

17.8

 

Any statin low intensity

3,074

68

1,850

60.2

628

20.4

33.9

139.5

34.8

55.1

16.0

 

Simvastatin alone

1,749

39

1,070

61.2

360

20.6

33.6

141.6

33.4

54.3

15.5

 

Simvastatin high dose (>40 mg)

70

2

37

52.9

14

20

37.8

134.6

44.2

46.5

12.0

 

Simvastatin low dose

1,679

37

1,033

61.5

346

20.6

33.5

141.9

32.9

54.6

15.6

 

Vytorin alone

174

4

85

48.9

43

24.7

50.6

142.6

45.6

52.8

16.3

 

Vytorin high dose (>40 mg simvast)

9

0

4

44.4

2

22.2

50.0

177.0

76.4

52

22.6

 

Vytorin low dose

165

4

81

49.1

41

24.8

50.6

141.0

44.5

52.8

16.3

 

Ezetimibe alone

210

5

126

60

55

26.2

43.7

137.5

31.3

56.8

16.7

 

Ezetimibe + statin

21

1

14

66.7

4

19

28.6

144.0

45.5

49.0

10.4

 

Total:

4,523

          
  1. * See methods section for definition.